Improvement in bobbin-winders



2Sheets-Shveet1. .T. SCHOFIELD.

BOBBIIN-WINDER. No. 177,162, Patented May 9, 1876.

N-PEIERS, FHOTO-LITHOGRAPHER, WASHINGTON. D C- UNITED STATES.

PATENT QFFIGE.

JOSEPH SGHOFIELD, OF WEST PITTSFIELD, MASSACHUSETTS.

IMPROVEMENT IN BOBBlN-WlNDERSr Specification forming part of Letters Patent No. 177, 162, dated May 9, 1876; application filed June 28, 1875.

To all whom it may concern:

Be it known that I, JOSEPH ScHorIELD, of West Pittsfield, in the county of Berkshire and State of Massachusetts, have invented an Improvement in Bobbin-Winders, of which the following is a specification:

In winding thread upon bobbins, the convolutions have been in the form of cones, the base of each conical layer of thread being the diameter of the bobbins as filled with thread.

Towind the bobbin with uniformity in this manner it has been usual to employ a wooden bobbin or quill that has had a tapering base that corresponds to the conical form in which the thread is wound. In making use of this character of bobbin or quill there is considerable loss in the space that can he filled with thread, and the bobbin is unnecessarily heavy. In my improved winder I am enabled to make use of a bobbin or quill that is tubular and provided with a head at one end, instead of a conical base, and I provide mechanism that winds the thread into the angle between the tube and head of the quill in a conical form, and when this has been accomplished the remainder of the bobbin is wound in conical layers. This improved mechanism is available for winding threads or yarn of any character, and may be used upon a spinning-jack or in a winder of any character.

In the drawing, Figure l is an elevation of the mechanism employed by me with the frame-work partially removed. Fig. 2 is a plan of the same below the linear 00. Fig. 3 is a diagram, showing the let olf rollers and band and Fig. 4 is a cross-section of the rocker.

The spindles a are driven by the bands I) from the drum 0, as usual, and the follower or thread-guide d is a wire upon the arms at, that are raised by the weight 3, as usual. My improved apparatus is applied either at one end of the winding-frame or near the middle, according to the number of bobbins, and the parts are sustained by a suitable frame, f. The actuating-shaft c is driven by a connection to the drum 0 or. otherwise. I have shown the belt 2, pulley g, and gearinge for the purpose of rotating this shaft e. Above this shaft 6 is the rocker-lever k, that is set to swing upon the cross shaft or fulcrum 4, and this rocker is oscillated by the heart-cam h on the shaft e, and a weight or spring, 6, is employed to keep the rocker in contact with the cam.- The let-off band 2' passes; from one of the thread-guide arms, 01, beneath a regulatorroller, 1, around the roller Z to the roller n, to which it is attached so as to'be wound thereon before the commencement of each winding "operation and unwound as the bobbins are filled, so as to allow the thread-guide to rise and act nearer the top of the bobbins. Upon the shaft of the roller 01, there is a ratchetwheel, 0, and a stationary pawl, 19, contiguous thereto. It will be now apparent that if this rocker is used with a bobbin or quill having a conical bottom the threadwvill' be wound upon the entire bobbin progressively, as a series of conical layers, because the rocking-lever will let up the threadguide and draw it down alternately a regular distance, andv the let-off band willbe gradually and slowly unwound by the ratchet-wheel 0 moving lip-against the stationary pawl 10.

I now proceed to describe the peculiar movement by which I am enabled to wind the thread in a gradually-enlarging conical form to fill the angle between the tubular quill and end of the bobbin.

The regulator-roller l is upon the slide 8, that is moved in a groove in the rocker-lever h by the pinion t acting upon teeth upon the slide 8; hence, when the pinion t is turned so that the rollerl is drawn back near the fulcrum 4 of the rocker h, the are described by I this roller is small and the consequent rise and fall of the thread-guide is small,.and the extent of movement of the threadguide will be increased as the rack is moved along to move the roller 1 farther from the fulcrum 4:.

This is accomplished by the ratchet-wheel s on the shaft of the pinion it moving against the stationary pawl t as the rocking-lever is swung. The parts are proportioned so that the rack will move along the required distance while the winding process is building up the coneof thread at the base of the bobbin, and after this cone of thread is wound, then the movement last described must cease, so that the slide .9 will not receive any further end movement during the winding of the conical layers, as first described. I throw the pawl t out of action when the endwise movement of the slide has been completed so as to allow the ratchet-wheel s to remain unacted upon. This is accomplished by a sliding shift in g-bar, 'v,that is moved along with the rackbar .9 by an arm, 12, extending downwardly from it and passing into a slot in the shiftingbar 12, and this bar 1: has a pin upon it at 13, to trip the latch to at the proper point and allow the barrel 0: to be partially revolved by a cord and spring, 15, and this barrel in its movement draws upon the cord 16 of the pawl t and throws it out of action. When the winder is winding the cone of thread at the base of the bobbin the let-ofi' roller 42 upon the rocker is turned progressively, but faster than when the complete conical layers of thread are being wound. To efiect this object I use a second ratchet-whereby, upon theshaft of the let-ofi' roller 12, and this ratchet-wheel is smaller than the ratchet-wheel 0, hence it is revolved by fewer oscillations of the rocker. 'lhe pawl 20 of this wheely is connected by a cord, 21, -over the pulley 22, with the second barrel w, and the pawl 19 of the wheel 0 is also connected with the barrel a: by a string or cord, 24, over the pulley 25, but these cords pass to opposite sides of the barrel at, so that when the said barrel is turned by the spring 15, the pawl 20 is withdrawnand the pawl 19 allowed to fall into action. At the same time the pawl t is with( u out of action, as aforesaid.

t e winding operation has been com- Whe n wapleted, the rack-slide .g is moved back by hand or otherwise to a predetermined point,and then the barrels a: w are turned back and caught by the latch w, which releases the pawls t and 20, i so that they are ready for operation, and the pawl 12 drawn back out of action, and the winder is ready for operation after tbe ful l bobbins have been removed and emptyones bobbin-winders, and is very different in its a construction from the spinning machinesheretofore made.

I claim asmy 1nvention 1. The rocking-lever h, fnlcrumed to a stationary frame and the revolving cani'h, in combination withthe let-ofi' roller a, band i, ratchet-wheel 0, pawl 1;,and thread-guide d, substantially as set forth.

2. The regulator-roller l, rack s, pinion t,

and ratchetwheel s, in combination with the rocker-lever h, fulcrumed to a stationary frame, let-off roller 41, hand 'i, and winding mechanism, substantially as set forth.

3. The shifting-bar 'v, and operative mechanism, latch to, drums w m, pawls t1 20, and their connections, in combination with the rocker h,'ratchet-wheels s 0 y, let-ofi' roller 12,

racks, and regulator-roller l, substantially as specified.

Signed by me this 12th day of June, 1875.

J OSEPH SOHOFIELD. Witnesses:

WILLIAM T. FELLEY, HENRY G. EDWARDS. 

